Unknown statement in MTL! Tf

Troubleshooting import-assets
1

Hello,



I need to upgrade a Programm written in jme2 to jme3 for my bachelor thesis,

for this i need to load an .obj file which has also a .mtl file



In jme2 this is working without any problems, but in jme3 it always says:



Unknown statement in MTL! Tf

Unknown statement in MTL! sharpness

Unknown statement in MTL! Tf

Unknown statement in MTL! sharpness



I used the following code:

Spatial halle = assetManager.loadModel(“Models/338k.obj”);

rootNode.attachChild(halle);



What can I do?



Thanks for your help.

2

Remove the unknown statements from the mtl for a start?

3

But then the object does not look like it should

4

Well Tf is a color filter as far as I see it, I guess the default importer does not take core of that, because the material tahts used per defaultfor obj does not support it. I guess you have to extend that part of the code to your needs, and probably write a own pixelshader since jme3 does not use the fixed pipeline anymore





For the sharpness not even google helps me to find out what it does at all?

5

Uhm, bigdom1001, do you have any other problems but these warnings? I mean, maybe the jME2 importer just ignores them silently, do the models look like they should?

6

Does the model display correctly?

The sharpness value is for a reflection map, which is not used by jME3. Tf is for transmission filter e.g. refraction color, it is not used either.

7

You were right it seems to be an other Problem



I load the object using:



Spatial Halle = assetManager.loadModel(“Models/338k.obj”);



and the Problem is that jme3 is culling the back face.



I can prevent this using:



Material mat = new Material(assetManager, “Common/MatDefs/Misc/ShowNormals.j3md”);

mat.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);

Halle.setMaterial(mat);



but then it seems overwrite the material from .mat file



is threre a way to prevent back face culling in general?



Thanks for your help.

8

just get the material and apply the facecullmode to that instead of creating a new one…

9

I can´t find a getter method.



How is it called?



Thanks

10

duh… getMaterial()…

[snippet id=“13”]

11

Thanks.

That solved my Problem:



Geometry model=(Geometry)assetManager.loadModel(“Models/338k.obj”);

Material mat=model.getMaterial();

mat.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);

model.setMaterial(mat);



Sorry, I am new and didn´t knew that Geometry has getMaterial() and Spatial not.

1 Like
12

Emmm,I copied your code to solve my problem but I got
class com.jme3.scene.Node cannot be cast to class com.jme3.scene.Geometry (com.jme3.scene.Node and com.jme3.scene.Geometry are in unnamed module of loader 'app')

13

I suspect that 13 years later even if these people are still here they won’t remember their own code. Id suggest starting a new thread explaining your issue (including what you’re doing)

[That said, your problem is probably that your saved model is a node at the top level not a Geometry, it probably doesnt need to be cast at all and can just be left as s spatial]